Let's roll up our sleeves and solve this. We have 761 and we're going to multiply it by 23, essentially adding 761 to itself 23 times.
Step 1: 0 + 761 = 761
Step 2: 761 + 761 = 1522
Step 3: 1522 + 761 = 2283
Step 4: 2283 + 761 = 3044
Step 5: 3044 + 761 = 3805
Step 6: 3805 + 761 = 4566
Step 7: 4566 + 761 = 5327
Step 8: 5327 + 761 = 6088
Step 9: 6088 + 761 = 6849
Step 10: 6849 + 761 = 7610
Step 11: 7610 + 761 = 8371
Step 12: 8371 + 761 = 9132
Step 13: 9132 + 761 = 9893
Step 14: 9893 + 761 = 10654
Step 15: 10654 + 761 = 11415
Step 16: 11415 + 761 = 12176
Step 17: 12176 + 761 = 12937
Step 18: 12937 + 761 = 13698
Step 19: 13698 + 761 = 14459
Step 20: 14459 + 761 = 15220
Step 21: 15220 + 761 = 15981
Step 22: 15981 + 761 = 16742
Step 23: 16742 + 761 = 17503

So, 761*23 = 17503